The other thing I learned is that the guy out loops and stake loops eventually will pull off if you don't sew through them! Both the clear duct tape and the gorilla tape do this.
Odd. I've never had a problem with the tape coming off THIS material. From my polycryo tent, yes. Speaking of which, I'd highly recommend that over the painter's cloth for a groundsheet. It's lighter and stronger. May be hard to come by in TX but you can order the window shrink film kits online.
You also don't need line tensioners - taut line hitch FTW!